Evolution
Natural Selection
Natural Selection Steps
fossils
Other
100
A change in a population over time.
What is evolution?
100
To adjust to a changing environment.
What is adapt?
100
Evolution happens in 2 ways: ________ and natural selection.
What is mutation?
100
physical remains of plants and animals preserved in rock or the earth's crust.
What is fossil?
100
the period of time that has passed since scientists believe the earth was formed.
What is geologic time?
200
When all the organisms of a species die.
What is extinct?
200
__________ wrote a book called On the Origin of Species.
What is Charles Darwin?
200
Organisms in a population are different from each other.
What is genetic variation?
200
A hollow space in the shape of an organism.
What is a mold?
200
particles of rock, sand, soil and plant and animal remains.
What is sediment?
300
Scientists have learned that living things have changed by studying _______, the physical remains of plants or animals.
What is fossils?
300
Organisms with traits that are best suited to the environment are most likely to survive and reproduce.
What is natural selection?
300
As natural selection happens within a population of organisms, the population responds to it's environment by _________.
What is adapting?
300
A fossil that is a copy of the shape of an organism made of minerals.
What is a cast?
300
collections and studies of fossils that help scientists figure out information about the earths past.
What is fossil record?
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